In a setback for the guardians of Frida Kahlo’s work, Mexico’s attorney general’s office has declined to bring charges against two art dealers who say they have an enormous collection of paintings, keepsakes and letters that belonged to the...

"Frida Kahlo and Diego Rivera from the Gelman Collection," showing through March 20 at the Pera Museum in Istanbul, offers an opportunity to see the works of these celebrated Mexican artists side by side, for the first time in Turkey.